Was i right to play out my secret fantasy?

i've been married for 8 years now. my wife is everything a husband could ask for and more. she's always there when i need her, we have a great life together. but lately something has been eating at me. ever since i discovered the world of bdsm i've had this secret fantasy that just won't leave me alone. imagine this: me dressed up in my most feminine attire, heels clicking across the floor as i wait for him to come and collect me. we meet in a hotel room and it's all about his rules, his fantasies. nothing has ever felt so forbidden or exciting before. but there's the rub - my wife isn't into this side of things at all. she knows about the fantasy, but we agreed it would stay just that: a thought experiment with no action behind it. i've been going back and forth in my head for weeks now. finally, after much deliberation, i took matters into my own hands. i met him once, just one time, at his place when my wife was out of town on business. we were careful, both fully clothed the whole time, but still it felt so taboo, so illicit. afterward, there's no going back - it feels like this secret is eating me alive now. did i cross a line? am i being unreasonable? or does every married person deserve to explore their desires in private sometimes, even if they never act on them with the partner? let me know what you think.